V382 Carinae, HD96918, HIP54463, HR4337

V382 Carinae is a white to yellow eruptive supergiant star that can be located in the constellation of Carina. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

V382 Carinae's Alternative Names

The Id of the star in the Yale Bright Star Catalogue is HR4337. HIP54463 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD96918.

Location of V382 Carinae

The location of the star in the galaxy is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the star is compared to the celestial equator and is expressed in degrees. For V382 Carinae, the location is 11h 08m 35.40 and -58° 58` 30.2 .

Proper Motion of V382 Carinae

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving 1.67 ± 0.13 miliarcseconds/year towards the north and -4.97 ± 0.17 miliarcseconds/year east if we saw them in the horizon. The Radial Velocity, that is the speed at which the star is moving away/towards us is 6.00000 km/s with an error of about 0.50 km/s .

Physical Properties (Colour, Temperature) of V382 Carinae

V382 Carinae has a spectral type of G0Ia0. This means the star is a white to yellow supergiant star. The star has a B-V Colour Index of 1.22 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,531 Kelvin.

V382 Carinae Radius has been calculated as being 451.43 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 314,102,983.15.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 477.08. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

V382 Carinae Apparent and Absolute Magnitudes

V382 Carinae has an apparent magnitude of 3.93 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of -7.37 If you used the 2007 Parallax value, you would get an absolute magnitude of -7.49. Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Distance to V382 Carinae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.55 which gave the calculated distance to V382 Carinae as 5930.24 light years away from Earth or 1818.18 parsecs. It would take a spaceship travelling at the speed of light, 5930.24 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

In 2007, Hipparcos data was revised with a new parallax of 0.52 which put V382 Carinae at a distance of 6272.37 light years or 1923.08 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.

Variable Type of V382 Carinae

The star is a eruptive Irregular variable type which means that its size changes over time. The Variable Type is usually named after the first star of that type to be spotted. V382 Carinae brightness ranges from a magnitude of 4.154 to a magnitude of 4.063 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.1 days (variability).

Source of Information

The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.